300,400kA大型铝电解槽铝液的波动状态  

Research on Fluctuation State of Liquid Aluminum in 300kA and 400kA Aluminum Reduction Cell

作　　者：李剑虹[1] 涂赣峰[1] 戚喜全[2] 毛继红[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819 [2]东北大学设计研究院(有限公司),辽宁沈阳110013

出　　处：《东北大学学报（自然科学版）》2011年第11期1603-1606,共4页Journal of Northeastern University(Natural Science)

基　　金：国家高技术研究发展计划项目(2009AA063701);国家"十一五"科技支撑计划项目(2009BAE85B00)

摘　　要：采用铁棒溶蚀法在工况条件下分别对300 kA和400 kA系列电流阴极炭块普通组合、高低组合以及端头槽和非端头的6台电解槽的铝液流场进行了工业测试.根据铁棒出现的正常溶蚀、"细腰"特征、溶蚀面扭转、溶蚀坑较多等现象详细地分析了槽内铝液的水平运动状态及垂直方向上的局部运动特征,并对不同结构电解槽的流速场进行了比较,沿槽大面方向,400 kA阴极炭块普通组合槽呈现大—小—小—大4个漩涡,阴极炭块高低组合槽呈现大小均匀的2个漩涡,而300 kA电解槽则呈现大小均匀的5个漩涡.Iron rod method was adopted for industrial metal flow measurement of six aluminum reduction cells.300 kA and 400 kA cells with same and different height of cathode blocks,end cell and middle cells were analyzed.The characteristics of whole horizontal flow and regional vertical flow in liquid aluminum were investigated by analyzing the phenomenon of different measured iron rods,which show normal erosion,thick-thin-thick character,turned eroded surface,numerous eroded holes.The flow velocity of the cells with different cathode structures was compared.In the direction of cell length,there are four eddies with big-small-small-big state in same height of cathode blocks 400 kA cell and two homogeneous eddies in different height of cathode blocks 400 kA cell,while there are five homogeneous eddies in same height of cathode blocks 300 kA cell.

关 键 词：铁棒溶蚀法 水平流速 “细腰”特征 溶蚀面扭转 溶蚀坑 

分 类 号：TF804.4[冶金工程—有色金属冶金]